I can not find the version you keep referring to. Where is this magical mesaflash hidden?
Btw: I am using the master-rt repo as I want 2.8 pre.

btw2: When I check the repositories there is just one mesaflash:

This change is not coming from a source that supports changelogs.
Failed to fetch the changelog for mesaflash
URI was: http://linuxcnc.org/dists/wheezy/base/binary-i386/mesaflash_3.3.0~pre0+dfsg-0_i386.changelog